Giant $g$-factors of Natural Impurities in Synthetic Quartz

@article{Goryachev2013GiantO,
  title={Giant \$g\$-factors of Natural Impurities in Synthetic Quartz},
  author={Maxim Goryachev and Warrick G. Farr and Michael E. Tobar},
  journal={Applied Physics Letters},
  year={2013},
  volume={103},
  pages={262404}
}
We report the observation of g-factors of natural paramagnetic impurities in a pure synthetic quartz crystal at milli-Kelvin temperatures. Measurements are made by performing spectroscopy using multiple high-Q whispering gallery modes sustained in the crystal. Extreme sensitivity of the method at low temperatures allows the determination of natural residual impurities introduced during the crystal growth. We observe g-factors that significantly differ from integer multiples of the electron g… 

Figures and Tables from this paper

Ultra-sensitive Whispering Gallery Mode spectroscopy of low loss crystals at cryogenic temperatures

This work provides a summary of application of low-temperature Whispering Gallery Mode spectroscopy to a study of impurity spins in crystalline solids. The method provides an extreme sensitivity that

Observation of low-temperature magnetomechanic effects in crystalline resonant phonon cavities

We observe magnetic effects in ultra-high quality factor crystalline quartz Bulk Acoustic Wave resonators at milli-Kelvin temperature. The study reveals existence of hysteresis loops, jumps and

Emergence of dielectric anisotropy of crystalline Strontium Titanate due to temperature-dependent phase transitions

We have undertaken precision measurements of permittivity of single crystal Strontium Titanate from 294.6 K to 5.6 K by measuring the frequency of multiple microwave transverse electric and magnetic

Discovery of iron group impurity ion spin states in single crystal Y2SiO5 with strong coupling to whispering gallery photons

Interaction of Whispering Gallery Modes (WGMs) with dilute spin ensembles in solids is an interesting paradigm of Hybrid Quantum Systems potentially beneficial for Quantum Signal Processing

Low-Temperature Properties of Whispering-Gallery Modes in Isotopically Pure Silicon-28

Whispering Gallery (WG) mode resonators have been machined from a boule of single-crystal isotopically pure silicon-28. Before machining, the as-grown rod was measured in a cavity, with the best

Evidence of dilute ferromagnetism in rare-earth doped yttrium aluminium garnet

This work demonstrates strong coupling regime between an erbium ion spin ensemble and microwave hybrid cavity-whispering gallery modes in a yttrium aluminium garnet dielectric crystal. Coupling

Precision Multi-Mode Dielectric Characterization of a Crystalline Perovskite Enables Determination of the Temperature-Dependent Phase Transitions

TLDR
It is unequivocally shown that the permittivity of Strontium Titanate has an isotropic value of 316.3±2.2 at room temperature, consistent with its well-known cubic structure, and the onset of dielectric anisotropy as the crystal is cooled to lower temperatures is determined.

Measurements of elastic properties of langatate at liquid helium temperatures for design of ultra low loss mechanical systems

We present full characterisation of acoustic wave devices based on the fully synthetic crystalline material at the liquid helium temperature range required for the design of ultra low loss mechanical

Determination of Low Loss in Isotopically Pure Single Crystal 28Si at Low Temperatures and Single Microwave Photon Energy

TLDR
Low dielectric photonic losses combined with the long lifetime of the spin transition (low magnetic loss), which enhances the magnetic AC susceptibility, indicate that single crystal 28Si could be an important crystal for future cavity QED experiments.

References

SHOWING 1-10 OF 20 REFERENCES

Ultrasensitive microwave spectroscopy of paramagnetic impurities in sapphire crystals at millikelvin temperatures

Progress in the emerging field of engineered quantum systems requires the development of devices that can act as quantum memories. The realization of such devices by doping solid-state cavities with

Complex permittivity of some ultralow loss dielectric crystals at cryogenic temperatures

Whispering gallery modes were used for very accurate permittivity and dielectric loss measurements of ultralow loss isotropic and uniaxially anisotropic single crystals. Several materials including

Dependence of the dielectric permittivity of single-crystal quartz on thermal deformation at cryogenic temperatures

The whispering gallery mode technique applied to single-crystal quartz has been used as a precise method to determine the dependence of the dielectric permittivity of pure single-crystal quartz on

Anomalously strong nonlinearity of unswept quartz acoustic cavities at liquid helium temperatures

We demonstrate a variety of nonlinear phenomena at extremely low powers in cryogenic acoustic cavities fabricated from quartz material, which have not undergone any electrodiffusion processes.

A review of electron spin spectroscopy and its application to the study of paramagnetic defects in crystalline quartz

A comprehensive review (ca. 230 references) is presented of the present (1983) state of knowledge of paramagnetic defects in crystalline quartz, as derived from electron paramagnetic resonance

Observation of Rayleigh phonon scattering through excitation of extremely high overtones in low-loss cryogenic acoustic cavities for hybrid quantum systems.

TLDR
The confinement of high frequency phonons approaching 1 GHz is demonstrated in phonon-trapping acoustic cavities at cryogenic temperatures using a low-coupled network approach, and Rayleigh-type phonon scattering losses due to highly diluted lattice impurities and corresponding glasslike behavior are revealed.

Characterization of unswept and swept quartz crystals for space applications

Unswept and vacuum-swept synthetic quartz crystals were investigated in order to determine the mechanisms responsible for the radiation sensitivity of this material. Results were obtained by means of

Aluminum‐related acoustic loss in AT‐cut quartz crystals

The substitutional aluminum ions present in all quartz requires charge compensation. In as‐grown synthetic quartz, interstitial alkali ions serve as the charge compensators. Irradiation at

EPR Spectrum of Fe3+ in Synthetic Brown Quartz

A detailed description is given of the EPR spectrum of Fe3+ in synthetic brown quartz (the so‐called I center, presumed to be interstitial). There are three equally populated sites differing only in